CN210591720U

CN210591720U - Integrated bus bar device of electric vehicle

Info

Publication number: CN210591720U
Application number: CN201921297375.3U
Authority: CN
Inventors: 谢百达; 陈新现; 叶剑双; 陈钦松; 张磊; 叶伟宏
Original assignee: Xiamen Jinlong Automobile New Energy Technology Co ltd
Current assignee: Xiamen Jinlong Automobile New Energy Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-22
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses an electric vehicle's female device of arranging of integration, include: the bus bar device comprises a bus bar device body, and a DC/DC module, a first DC/AC module, a second DC/AC module and a pre-charging circuit which are arranged on the bus bar device body, wherein positive input ends of the DC/DC module, the first DC/AC module and the second DC/AC module are connected to a positive pole of a direct current bus through a fuse and a relay, negative input ends of the DC/DC module, the first DC/AC module and the second DC/AC module are connected to a negative pole of the direct current bus, an input end of the pre-charging circuit is connected to the positive pole of the direct current bus, an output end of the pre-charging circuit is connected to a positive pole end of a motor controller through an electric control positive pole, an access point of the positive pole of the direct current bus is provided with, and selecting the action execution time point of the corresponding relay according to the voltage difference detected between the negative terminal detection point and the bus positive detection point. Therefore, the power distribution of each electric accessory is integrated together through the integrated busbar device of the electric vehicle, so that the automatic production is realized, and the failure rate is reduced.

Description

Integrated bus bar device of electric vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to female device of arranging of electric vehicle's integration.

Background

In the correlation technique, the inside high-voltage distribution of four unifications of new forms of energy auxiliary control all is connected through copper bar and pencil, and this mode exists that assembly process is complicated, can't realize automated production's problem, in addition, because copper bar occupation space's big, and relay or contactor of every control all need a wire, so need a large amount of pencil, not only inconvenient arrange the pencil, along with the increase of wire, the possibility of going wrong is also higher more moreover to greatly increased the fault rate.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the above-mentioned technology to a certain extent. Therefore, an object of the utility model is to provide an electric vehicle's female device of arranging of integration, through carrying out the compactification design to assisting four unification high voltage distribution modules of accuse, with the distribution integration of each electric accessory module female arranging in the same to realize automated production, and greatly reduced the fault rate.

In order to achieve the above object, the utility model provides an electric vehicle's female device of arranging of integration on the one hand, include: the bus bar device comprises a bus bar device body, and a DC/DC module, a first DC/AC module, a second DC/AC module and a pre-charging circuit which are arranged on the bus bar device body, wherein the positive input end of the DC/DC module is connected to the positive pole of a direct current bus through a first fuse and a first relay which are connected in series, the negative input end of the DC/DC module is connected to the negative pole of the direct current bus, the output end of the DC/DC module is used for connecting an on-vehicle storage battery, the positive input end of the first DC/AC module is connected to the positive pole of the direct current bus through a second fuse and a second relay which are connected in series, the negative input end of the first DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the first DC/AC module is used for connecting an air pump motor, and the positive input end of the second DC/AC module is connected to the positive pole of, the negative input end of the second DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the second DC/AC module is used for connecting an oil pump motor, the input end of the pre-charging circuit is connected to the positive pole of the direct current bus, the output end of the pre-charging circuit is connected to the positive pole end of the motor controller through the electric control positive pole, the negative pole of the direct current bus is connected to the negative pole end of the motor controller through an electric control negative pole, the access point of the positive pole of the direct current bus is provided with a bus positive detection point, for monitoring the bus voltage, the negative terminals of the first relay, the second relay and the third relay are respectively provided with a negative terminal detection point for monitoring the negative terminal voltage of the corresponding relay, so as to select the action execution time point of the corresponding relay according to the voltage difference between the negative terminal detection point and the bus positive detection point.

According to the integrated bus bar device of the electric vehicle provided by the utility model, the DC/DC module, the first DC/AC module, the second DC/AC module and the pre-charging circuit are arranged on the bus bar device body, the positive input end of the DC/DC module is connected to the positive pole of the direct current bus through the first fuse and the first relay which are connected in series, the negative input end of the DC/DC module is connected to the negative pole of the direct current bus, the output end of the DC/DC module is used for connecting the vehicle-mounted storage battery, the positive input end of the first DC/AC module is connected to the positive pole of the direct current bus through the second fuse and the second relay which are connected in series, the negative input end of the first DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the first DC/AC module is used for connecting the motor, the positive input end of the second DC/AC module is connected to the positive pole of the direct, the negative input end of the second DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the second DC/AC module is used for connecting an oil pump motor, the input end of the pre-charging circuit is connected to the positive pole of the direct current bus, the output end of the pre-charging circuit is connected to the positive pole end of the motor controller through the electric control positive pole, the negative pole of the direct current bus is connected to the negative pole end of the motor controller through the electric control negative pole, a bus positive detection point is arranged at an access point of the positive pole of the direct current bus to monitor the bus voltage, and negative ends of the first relay, the second relay and the third relay are respectively provided with a negative detection point to monitor the negative end voltage of the corresponding relay, so that the execution action time point of the corresponding relay is selected according. Therefore, the power distribution of each electric accessory is integrated together through the integrated busbar device of the electric vehicle, so that the automatic production is realized, and the failure rate is greatly reduced.

In addition, according to the utility model discloses above-mentioned female device of arranging of electric vehicle's integration can also have following additional technical characterstic:

optionally, the pre-charging circuit includes a pre-charging relay, a fourth relay, and a pre-charging resistor, and the pre-charging relay is connected in series with the pre-charging resistor and then connected in parallel with the fourth relay.

Optionally, the positive end of the pre-charge relay is connected to the positive electrode of the dc bus after being connected to the positive end of the fourth relay, the negative end of the pre-charge relay is connected to one end of the pre-charge resistor, the other end of the pre-charge resistor is connected to the positive electrode of the electric control unit through the fourth fuse after being connected to the negative end of the fourth relay, the positive end of the fourth relay is provided with a fourth negative end detection point, when the pre-charge relay is closed and the fourth relay is disconnected, the capacitor in the motor controller is pre-charged, and when a voltage difference between the positive detection point of the bus and the fourth negative end detection point is smaller than a preset value, the fourth relay is closed.

Optionally, the electrically-controlled positive electrode and the electrically-controlled negative electrode are arranged on the outer side of the busbar device body.

Optionally, a dc bus positive terminal and a dc bus negative terminal are further disposed on the outer side of the busbar device body, the dc bus positive terminal is connected to the dc bus positive electrode, and the dc bus negative terminal is connected to the dc bus negative electrode.

Optionally, the integrated busbar device of the electric vehicle further includes a plurality of electrical accessory power supply branches disposed on the busbar device body and a plurality of electrical accessory positive terminals disposed outside the busbar device body, each electrical accessory power supply branch includes an electrical accessory relay and an electrical accessory fuse connected in series, a negative terminal of each electrical accessory fuse and a negative terminal of the dc bus are correspondingly connected to the corresponding electrical accessory positive terminal and the dc bus negative terminal, and a negative terminal of each electrical accessory relay sets an electrical accessory detection point to monitor a negative terminal voltage of the corresponding electrical accessory relay, so as to select an execution time point of the corresponding electrical accessory relay according to a voltage difference between the electrical accessory detection point and the bus positive detection point.

Optionally, the plurality of electrical accessories includes an electrical defrost device, an electrical heating device, and an electrical air conditioning device.

Drawings

Fig. 1 is a block diagram schematically illustrating an integrated busbar device of an electric vehicle according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1, an integrated busbar device for an electric vehicle according to an embodiment of the present invention includes a busbar device body 100, a DC/DC module 10, a first DC/AC module 20, a second DC/AC module 30, and a pre-charging circuit 40.

Wherein, the DC/DC module 10, the first DC/AC module 20, the second DC/AC module 30 and the pre-charging circuit 40 are disposed on the busbar device body 100, the positive input end of the DC/DC module 10 is connected to the positive pole of the DC bus through the first fuse FU1 and the first relay K1 connected in series, the negative input end of the DC/DC module 10 is connected to the negative pole of the DC bus, the output end of the DC/DC module 10 is used to connect the vehicle-mounted battery 50, the positive input end of the first DC/AC module 20 is connected to the positive pole of the DC bus through the second fuse FU2 and the second relay K2 connected in series, the negative input end of the first DC/AC module 20 is connected to the negative pole of the DC bus, the three-phase output end of the first DC/AC module 20 is used to connect the air pump 60, the positive input end of the second DC/AC module 30 is connected to the positive pole of the DC bus through the third fuse FU3 and the third relay K3 connected, the negative input end of the second DC/AC module 30 is connected to the negative pole of the DC bus, the three-phase output end of the second DC/AC module 30 is used to connect the oil pump motor 70, the input end of the pre-charging circuit 40 is connected to the positive pole of the DC bus, the output end of the pre-charging circuit 40 is connected to the positive pole of the motor controller through the electric control positive pole, the negative pole of the DC bus is connected to the negative pole of the motor controller through the electric control negative pole, and a bus positive detection point is provided at the positive access point of the DC bus to monitor the bus voltage, and the negative terminals of the first relay K1, the second relay K2 and the third relay K3 are respectively provided with a negative terminal detection point to monitor the negative terminal voltage of the corresponding relays, so as to select the execution action time point of the corresponding relays according to the voltage difference between.

That is, the bus voltage is monitored through the bus positive detection point, the negative terminal voltage of the first relay K1 is monitored through the negative terminal detection point of the first relay K1, the voltage difference between the negative terminal voltage of the first relay K1 and the bus voltage is compared, and the first relay K1 is closed if the voltage difference is smaller than a preset value; monitoring the voltage of the negative end of the second relay K2 through the negative end detection point of the second relay K2, comparing the voltage difference between the voltage of the negative end of the second relay K2 and the voltage of the bus, and closing the second relay K2 if the voltage difference is smaller than a preset value; monitoring the voltage of the negative end of the third relay K3 through the negative end detection point of the third relay K3, comparing the voltage difference between the voltage of the negative end of the third relay K3 and the voltage of the bus, and closing the third relay K3 if the voltage difference is smaller than a preset value; thereby selecting the action execution time point of the corresponding relay according to the voltage difference.

As shown in fig. 1, the precharge circuit 40 includes a precharge relay K5, a fourth relay K4, and a precharge resistor R1, and the precharge relay K5 is connected in series with the precharge resistor R1 and then connected in parallel with the fourth relay K4.

As an embodiment, the positive terminal of the pre-charge relay K5 is connected to the positive terminal of the fourth relay K4 and then connected to the positive terminal of the dc bus, the negative terminal of the pre-charge relay K5 is connected to one terminal of the pre-charge resistor R1, the other terminal of the pre-charge resistor R1 is connected to the negative terminal of the fourth relay K4 and then connected to the positive electrode of the electric controller through the fourth fuse FU4, the positive terminal of the fourth relay K4 is provided with a fourth negative terminal detection point, when the pre-charge relay K5 is closed and the fourth relay K4 is opened, the capacitor in the motor controller is pre-charged, and the fourth relay K4 is closed when the voltage difference between the positive detection point of the bus and the fourth negative terminal detection point is smaller than a preset value.

It should be noted that, because the capacitor is arranged in the motor controller, if the pre-charge circuit 40 is not arranged, the fourth relay K4 is directly closed, and at the moment of high-voltage power-on, the electric control power supply circuit will generate a current of 2000-3000V, and the fourth relay K4 is directly damaged. Therefore, by closing the pre-charging relay K5, the pre-charging loop is conducted, the pre-charging resistor R1 bears the instantaneous large current generated when the circuit is switched on, the pre-charging loop charges the capacitor, and when the voltage difference is smaller than the preset value by comparing the voltage at the positive detection point of the bus with the voltage at the negative detection point of the fourth relay K4, the fourth relay K4 is closed, and the pre-charging relay K5 is switched off.

As an embodiment, the electrically-controlled positive electrode and the electrically-controlled negative electrode are disposed outside the busbar device body 100.

Further, as an embodiment, a dc bus positive terminal and a dc bus negative terminal are further provided on the outside of the busbar device body 100, the dc bus positive terminal is connected to the dc bus positive electrode, and the dc bus negative terminal is connected to the dc bus negative electrode.

Further, the integrated busbar device further comprises a plurality of electrical accessory power supply branches arranged on the busbar device body 100 and a plurality of electrical accessory positive terminals arranged outside the busbar device body 100, each electrical accessory power supply branch comprises an electrical accessory relay and an electrical accessory fuse which are connected in series, the negative end and the negative electrode of each electrical accessory fuse are correspondingly connected to the corresponding electrical accessory positive terminal and the corresponding direct-current bus negative terminal, and an electrical accessory detection point is arranged at the negative end of each electrical accessory relay to monitor the negative end voltage of the corresponding electrical accessory relay, so that the execution action time point of the corresponding electrical accessory relay is selected according to the voltage difference between the electrical accessory detection point and the positive bus detection point.

As an embodiment, as shown in fig. 1, the plurality of electrical accessories include an electrical accessory 1, an electrical accessory 2 and an electrical accessory 3, the electrical accessory 1 includes a relay K6 and a fuse FU6 connected in series, a negative terminal of the fuse FU6 and a negative terminal of the dc bus are connected to a positive terminal and a negative terminal of the dc bus of the electrical accessory 1, respectively, and a negative terminal of the relay K6 is provided with an electrical accessory detection point for monitoring a voltage of the negative terminal of the relay K6 of the electrical accessory 1; the accessory 2 comprises a relay K7 and a fuse FU7 which are connected in series, the negative end of the fuse FU7 and the negative electrode of a direct current bus are correspondingly connected to the positive terminal and the negative terminal of the direct current bus of the electric accessory 2, and the negative end of the relay K7 is provided with an electric accessory detection point for monitoring the voltage of the negative end of the relay K7 of the electric accessory 2; the accessory 3 comprises a relay K8 and a fuse FU8 which are connected in series, the negative end of the fuse FU8 and the negative electrode of a direct current bus are correspondingly connected to the positive terminal and the negative terminal of the direct current bus of the electric accessory 3, and the negative end of the relay K8 is provided with an electric accessory detection point for monitoring the voltage of the negative end of the relay K8 of the electric accessory 3; and comparing the voltage difference between each electric accessory detection point and the bus positive detection point with a preset value, and if the voltage difference is smaller than the preset value, closing the corresponding relay. Therefore, the time point of the action executed by the corresponding relay is selected through the comparison of the voltage difference, and the function of protecting the relay is achieved.

Further, the plurality of electrical accessories include an electrical defrost device, an electrical heating device, and an electrical air conditioning device.

That is, the above-described electrical accessory 1 may be an electrical defrosting apparatus, the electrical accessory 2 may be an electrical heating apparatus, and the electrical accessory 3 may be an electrical air conditioning apparatus, as one embodiment.

In summary, according to the utility model provides an electric vehicle's female device of arranging of integration, through be provided with DC/DC module on female device body of arranging, first DC/AC module, second DC/AC module, the pre-charging circuit, and be connected to the direct current bus positive pole through series connection's first fuse and first relay with the positive input end of DC/DC module, the negative input end of DC/DC module is connected to the direct current bus negative pole, the output of DC/DC module is used for connecting vehicle-mounted battery, the positive input end of first DC/AC module is connected to the direct current bus positive pole through series connection's second fuse and second relay, the negative input end of first DC/AC module is connected to the direct current bus negative pole, the three-phase output of first DC/AC module is used for connecting the air pump motor, the positive input end of second DC/AC module is connected to the direct current bus positive pole through series connection's third fuse and third relay The negative input end of the second DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the second DC/AC module is used for connecting an oil pump motor, the input end of the pre-charging circuit is connected to the positive pole of the direct current bus, the output end of the pre-charging circuit is connected to the positive pole end of the motor controller through the electric control positive pole, the negative pole of the direct current bus is connected to the negative pole end of the motor controller through the electric control negative pole, a bus positive detection point is arranged at an access point of the positive pole of the direct current bus to monitor the bus voltage, and negative ends of the first relay, the second relay and the third relay are respectively provided with a negative end detection point to monitor the negative end voltage of the corresponding relay, so that the execution action time point of the corresponding relay is selected according. Therefore, the power distribution of each electric accessory is integrated together through the integrated busbar device of the electric vehicle, so that the automatic production is realized, and the failure rate is greatly reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An integrated busbar device of an electric vehicle is characterized by comprising a busbar device body, and a DC/DC module, a first DC/AC module, a second DC/AC module and a pre-charging circuit which are arranged on the busbar device body, wherein the positive input end of the DC/DC module is connected to the positive pole of a direct current bus through a first fuse and a first relay which are connected in series, the negative input end of the DC/DC module is connected to the negative pole of the direct current bus, the output end of the DC/DC module is used for connecting an on-vehicle storage battery, the positive input end of the first DC/AC module is connected to the positive pole of the direct current bus through a second fuse and a second relay which are connected in series, the negative input end of the first DC/AC module is connected to the negative pole of the direct current bus, and the three-phase output end of the first DC/AC module is used for connecting an air pump, the positive input end of the second DC/AC module is connected to the positive pole of the direct current bus through a third fuse and a third relay which are connected in series, the negative input end of the second DC/AC module is connected to the negative pole of the direct current bus, the three-phase output end of the second DC/AC module is used for connecting an oil pump motor, the input end of the pre-charging circuit is connected to the positive pole of the direct current bus, the output end of the pre-charging circuit is connected to the positive pole end of a motor controller through an electric control positive pole, the negative pole of the direct current bus is connected to the negative pole end of the motor controller through an electric control negative pole, the access point of the positive pole of the direct current bus is provided with a bus positive detection point for monitoring the bus voltage, and the negative terminals of the first relay, the second relay and the third relay are respectively provided with a negative terminal detection point for monitoring the negative, so as to select the action execution time point of the corresponding relay according to the voltage difference between the negative terminal detection point and the bus positive detection point.

2. The integrated busbar device of claim 1, wherein the pre-charge circuit comprises a pre-charge relay, a fourth relay and a pre-charge resistor, and the pre-charge relay is connected in series with the pre-charge resistor and then connected in parallel with the fourth relay.

3. The integrated busbar device of claim 2, wherein a positive terminal of a pre-charge relay is connected to a positive terminal of the fourth relay and then connected to the positive terminal of the dc bus, a negative terminal of the pre-charge relay is connected to one terminal of a pre-charge resistor, the other terminal of the pre-charge resistor is connected to a negative terminal of the fourth relay and then connected to the positive electrode of the electric controller through a fourth fuse, a fourth negative terminal detection point is disposed on the positive terminal of the fourth relay, when the pre-charge relay is closed and the fourth relay is opened, a capacitor in the motor controller is pre-charged, and when a voltage difference between the positive bus detection point and the fourth negative terminal detection point is smaller than a preset value, the fourth relay is closed.

4. The integrated busbar device according to any one of claims 1 to 3, wherein the electrically controlled positive electrode and the electrically controlled negative electrode are disposed outside the busbar device body.

5. The integrated busbar device for electric vehicles according to claim 4, wherein a positive terminal of a direct current bus and a negative terminal of the direct current bus are further provided on the outer side of the busbar device body, the positive terminal of the direct current bus is connected to the positive terminal of the direct current bus, and the negative terminal of the direct current bus is connected to the negative terminal of the direct current bus.

6. The integrated busbar device according to claim 5, further comprising a plurality of electrical accessory power supply branches provided on the busbar device body and a plurality of electrical accessory positive terminals provided outside the busbar device body, each electrical accessory power supply branch comprising an electrical accessory relay and an electrical accessory fuse connected in series, a negative terminal of each electrical accessory fuse and a negative terminal of the DC bus being connected to the corresponding electrical accessory positive terminal and the DC bus negative terminal, respectively, a negative terminal of each electrical accessory relay being provided with an electrical accessory detection point to monitor a negative terminal voltage of the corresponding electrical accessory relay so as to select an execution action time point of the corresponding electrical accessory relay according to a voltage difference between the electrical accessory detection point and the positive bus detection point.

7. The integrated busbar device for electric vehicles according to claim 6, wherein the plurality of electrical accessories comprise an electrical defrosting device, an electrical heating device and an electrical air conditioning device.